A motor includes a shaft. The motor includes a motor section and a motor-driving section that is positioned on one side of the motor section in the axial direction and that drives the motor section. The motor section includes a rotor that is rotatable around the shaft, a stator that is disposed outside of the rotor in a radial direction, and a housing that contains the rotor and the stator. The motor-driving section includes a circuit board and a plurality of heat-generating elements mounted on the circuit board. The motor includes an inverter circuit that controls driving of the motor section and an inverter case that contains the inverter circuit. The inverter circuit includes a plurality of blocks including a power source block, a drive block, and a control block, and at least one of the plurality of blocks is separated from the other blocks.

The present invention provides an electric motor which includes a stator and a rotor rotatable relative to the stator. The stator includes a stator core and a winding. The stator core includes a yoke and a plurality of teeth extending from the yoke. The winding is wound on the teeth. The stator further comprises a shielding member mounted to at least one axial end of the stator core, and at least one of opposite axial ends of the winding is completely covered by the shielding member. The electric motor of the present invention has a reduced electromagnetic interference (EMI) and improved electromagnetic compatibility (EMC).

There are provided: a rotor including a rotating shaft and a rotor core; a stator including a stator core and stator windings; bearings; a casing fixed to the stator core and connected to the bearings, which houses the rotor and the stator; and an electrostatic shield connected to the casing. The electrostatic shield has a plurality of opening holes by which a space in which the stator is disposed is communicated with a space in which the rotor is disposed.

An actuator includes a movable body including: a disk-shaped magnet, a pair of disk-shaped yokes fixed to front and back surfaces of the disk-shaped magnet, a pair of spring retaining parts connected at one ends to the disk-shaped yokes, respectively, and connected at other ends to central portions of circular leaf springs, respectively, and a protruding part protruding in an axial direction of the disk-shaped magnet from the other end of one spring retaining part of the pair of spring retaining parts; and a fixing body including: a coil disposed at an outer circumference of the movable body, and a case including an opening portion through which the protruding part is inserted, the case accommodating the coil and the movable body such that a protruding end side of the protruding part protrudes to an outside.

An electronically commutated electric motor according to the invention is notably used in an air blast device and in a motor vehicle heating, ventilating and/or air-conditioning installation.

The motor comprises a rotor (16) and a stator (14).

The stator is mounted on a metal support means (10) that is arranged so as to protrude from a bearing plate (12) and is electrically connected to an electrical earth.

And a screen (34) is disposed between the rotor and the stator, said screen also being electrically connected to the electrical earth.

A linear conveyor includes a linear motor stator including a stator including a core and a coil, and a magnetic sensor configured to detect a position of a slider. The linear conveyor further includes a magnetic shielding member arranged between the magnetic sensor and the linear motor stator and configured to shield magnetic flux from the linear motor stator toward the magnetic sensor.

An electrical machine including a rotor and a stator, at least one of the rotor and stator being provided with superconducting first electrical windings; and a set of one or more screen electrical windings, provided in the form of one or more further superconducting electrical windings, arranged around and radially outward of the first electrical windings; wherein the set of screen electrical windings is arranged to be supplied with an electrical current for generating a magnetic field of suitable magnitude and phase to reduce the magnitude of the magnetic field, generated at least by the first electrical windings during operation of the electrical machine, radially outwards of the screen electrical windings.

A description is given of an apparatus for the generation of electric current (1; 101; 201; 301; 351; 401; 501), comprising an armature element (10; 110; 210; 310; 360; 410; 510) supporting one or more electrical windings or conductors (12; 112; 212; 312; 362; 412; 512), appropriately arranged in a magnetic field generated by an inductor (20; 120; 320; 370; 420; 520), and optionally comprising a box structure (260) having an opening, whose surfaces have a magnetic shielding function and are intended to surround at least said armature element (10; 110; 210; 310; 360) on all sides except on the one corresponding to said opening, wherein, in operation, said armature element (10; 110; 210; 310; 360; 410; 510) is fixed and is maintained static with respect to the inductor (20; 120; 320; 370; 420; 520) and in that it comprises a shielding structure (30; 130; 230; 330; 380; 430; 530) supporting a plurality of sectors (32; 132; 232; 332; 382; 432; 532) with the function of a magnetic shield, and wherein said sectors with the function of a magnetic shield (32; 132; 232; 332; 382; 432; 532) are made up of a metal alloy comprising nickel and iron and have a thickness that varies between 0.003 mm and 3 mm, and in that said shielding structure (30; 130; 230; 330; 380; 430; 530) is set in rotation or in oscillation to cause a variation of the magnetic field and thus of the flux concatenated to said one or more windings or conductors (12; 112; 212; 312; 362; 412; 512) of the armature element (10; 110; 210; 310; 360; 410; 510).

The invention relates to a stator device (1) for an electric machine of a flywheel mass accumulator device, having a laminating unit (2), having a winding (5) and at least two vacuum-side motor phase connection cables (6) connected to the winding (5), having a cylindrical sleeve unit (3), on the outer lateral surface (3a) of which the laminating unit (2) is arranged, and having a sealing unit (7), which is arranged on an inner circumferential surface (3b) of the sleeve unit (3) and which is designed to connect the vacuum-side motor phase connection cables (6) in each case in a vacuum-tight manner to a respective circumferential-side motor phase connection cable (6), in order to provide a stator device (1), which is improved in terms is of its installation space requirement, for an electric machine of a flywheel mass accumulator device.

An electric motor includes a motor main body and an inverter. The inverter is axially stacked on one end of the motor main body, and the inverter includes a gate driver, a control circuit, a capacitor module, a DC bus bar, a plurality of power modules and a plurality of AC bus bars. The power module includes a plurality of AC output terminals, a plurality of DC input terminals and a plurality of signal terminals, and the AC bus bars are respectively connected to corresponding AC output terminals and extend downward to a motor coil of the motor main body. The power modules and the corresponding DC input terminals are annularly arranged around the capacitor module, the DC bus bar is extended and electrically connected to the corresponding DC input terminals and the capacitor module.